1. int. a term often used by the heroic cast of the graphic novel series Bone, whenever the two main rat creatures do something unquestionably stupid

2. int. a term used to show disgust towards people who have done something really stupid, usu. when this results in major inconvenience to you and/or them and usu. with "rat creatures" substituted for the people you wish to insult

"Those rat creatures would have to be pretty stupid to follow me on this frail, little branch!" - Fone Bone
"Stupid, stupid rat creatures!" - Fone Bone when the rat creatures follow him on the frail, little branch